Hybrid LTE Unicast Broadcast

The Long Term Evolution (LTE) networks provides mobile users with perpetually increasing ubiquitous access to a rich selection of high quality multimedia. This work proposes a Hybrid Unicast Broadcast Synchronisation (HUBS) framework which works within the LTE standard to synchronously deliver multi stream video content by monitoring the radio bearer queues to establish a time lead or lag between broadcast and unicast streams. Since unicast and eMBMS share the same radio resources, the number of Sub-Frames allocated to the eMBMS transmission are then dynamically increased or decreased to minimise the average lead/lag time offset between the streams. Dynamic allocation showed improvements for all services across the cell, whilst keeping streams synchronised despite increased user loading.